CVE-2020-3998

Name: CVE-2020-3998
Creator: NVD / NIST
Published: 2020-10-23T14:15:12.61+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 1.27%

Last modified Jun 17, 2026

CVE-2020-3998 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. VMware Horizon Client for Windows (5.x prior to 5.5.0) contains an information disclosure vulnerability. A malicious attacker with local privileges on the machine where Horizon Client for Windows is installed may be able to retrieve hashed credentials if the client crashes.. EPSS estimates a 1.27% chance of exploitation in the next 30 days.

Description

VMware Horizon Client for Windows (5.x prior to 5.5.0) contains an information disclosure vulnerability. A malicious attacker with local privileges on the machine where Horizon Client for Windows is installed may be able to retrieve hashed credentials if the client crashes.

Metrics

CVSS 3.1

6.5/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

EPSS Probability

1.27%

66.1th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Vmware	Horizon Client	>= 5.0.0, < 5.5.0

References

https://www.vmware.com/security/advisories/VMSA-2020-0024.htmlPatch, Vendor Advisory
https://www.vmware.com/security/advisories/VMSA-2020-0024.htmlPatch, Vendor Advisory

Timeline

Published: Oct 23, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-3998?

How severe is CVE-2020-3998?

CVE-2020-3998 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 1.27% probability of exploitation in the next 30 days.

How do I fix CVE-2020-3998?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-3998?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST